Fire-resisting shutter or door.



PATENTED JULY 5, 1904 J. VOLP.

FIR-E RESISTING SHUTTER 0R DOOR.

APPLICATION FILED rm'. 24, 1004.

l/Menage UNITED STATES Patented July 5, 1904.

PATENT OFFICE.

JOHN VOLP, OF GROVE CITY, OHIO, ASSIGNOR TO THE KINNEAR MANU- FACTURING COMPANY, OF COLUMBUS, OHIO, A CORPORATION OF WEST VIRGINIA.

FlRE-R'ESISTING SHUTTER OR DOOR.

SPECIFICATION formingpart of Letters Patent No. 764,219, dated. July 5, 1904.

Application filed February 24, 1904. Serial No. 195,042. (No model.)

To It w/eom it may concern:

Be it known that I, JOHN VOLP, a citizen of the United States, residing at Grove City, in the county of Franklin and State of Ohio,

5 have invented certain new and useful Improvements in FirerResisting Shutters or Doors; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the 1 art to which it appertains to make and use the same.

This invention relates more particularly to the kind of fire-resisting shutters and doors that are made up of strips of wood constitut- I ing a core and a sheathing or covering therefor of sheet metal.

The special object of the invention is to provide an eflicient means for tying and securing the sheathing to the core, so that it shall 2 not be liable to part at the joints when the shutter is subjected to great heat.

The accompanying drawing illustrates, on a magnified scale, a section of a fraction of a shutter or door.

5 In the drawing, 1 designates the strips of wood constituting the core, 2 the sheets of metal constituting the sheathing, and 3 the strips of metal for tying the sheathing to the core. The sheets 2, constituting the sheath- 3 ing, are bent along their upper edge to form a hook member 2 and a shoulder 2", standing across the mouth of the hook, and along their lower edge with a plain hook member 2,so that the lower edge of one sheet can be hooked in the upper edge of that next below. The tie pieces 3, which extend between the wooden core-pieces 1. are each bent at the edges upward and then downward and finally upward" to form a compound hook member 3, adapted 4 to embrace three sides or the top and sides of the hook member 2 and enter the hook member 2" and also the cavity of the hook member- 2. The cavity of the hook member 2 thus receives the edges of the tie-piece 3 and the edges of the hook member 2, and the shoulder 2 of the hook member 2 prevents movement of the sheathing vertically, while the shoulder of the compound hook member 3" prevents tendency to separation horizontally. The several sections constituting the core can be bound together vertically by means of one or more tie-bolts 4 passed transversely through the wooden strips thereof. The particular arrangement of sheathing-pieces shown also promotes the shedding of water.

The joints'can be soldered and made gastight with a refractory solder 4. When this is done, it the solder melts and flows away on one side of the shutter the gases generated within the core escape on that side only, because usually the thickness of the eorewill prevent the conduction of suflicient heat to melt the solder on the unexposed side of the shutter. Solder, as is well known, can be alloyed so as to make its fusing-point great or small. If the shutter be thin, the fusingpoint of the solder can be made high.

What I claim, and desire to secure by Letters Patent, is-

1. In a fire-resisting shutter or door having a core, sheathing-pieces having a shouldered hook member and a plain hook member engagedwith each other, and a tie-piece passing through the core having a compound. hook member adapted to embrace three sides of the shouldered hook member and enter the cavity of said hook member.

2. In a fire-resisting shutter or door having a core, sheathing-pieces having a shouldered hook member and a plain hook member engaged with each other, and a tie-piece passing through the core having a hook member to pass over the outer side of the shouldered hook member and enter the cavity thereof.

3. In a fire-resisting shutter or door having a core, sheathing-pieces having oppositelyturned hook members engaged with each undue rise of temperature to permit the esother, and tie-pieces extending through the cape of gases'generated in the core. IO core having hook members engaging the en- In testimohy whereof I afiix my signature gaged hook members of the sheathing-pieces. in presence of two witnesses.

5 4. In a fire-resisting shutter or door having JOHN VOLP.

a core, jointed sheathing-pieces covering said Witnesses; core, and fusible solder in the joints of said C. J. HUTso'N,

sheathing-pieces adapted to'he fused by an BENJAMIN FINCKEL. 

